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From: Michael Roth <mroth@nessie.de>
To: gcc-help@gcc.gnu.org
Subject: How to tune gcc for different x86 host and target cpus?
Date: Fri, 23 Apr 2004 11:50:00 -0000	[thread overview]
Message-ID: <40890299.1070608@nessie.de> (raw)

Hello,

as far as I understand, when building gcc, I can use --with-arch=pentium 
to tell configure that the resulting compiler should emit code optimized 
for pentium processors.

But how can I tell the configure script that the compiler itself should 
be optimized for a different cpu architecture?

Example #1: Host and build are athlon-xp, target should be pentium.

Example #2: Build is pentium4, Host should be pentium-mmx, target should 
be 386.

What configure options should I use? (Host, build and target are all 
linux systems, but I think this apply to every system with x86 processor 
variants?)

Michael Roth

             reply	other threads:[~2004-04-23 11:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-23 11:50 Michael Roth [this message]
2004-04-25  0:56 ` Ian Lance Taylor
2004-05-12 19:45   ` Michael Roth

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